CN104104188B - There is the motor improving circuit board - Google Patents
There is the motor improving circuit board Download PDFInfo
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- CN104104188B CN104104188B CN201310120398.8A CN201310120398A CN104104188B CN 104104188 B CN104104188 B CN 104104188B CN 201310120398 A CN201310120398 A CN 201310120398A CN 104104188 B CN104104188 B CN 104104188B
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- circuit board
- motor
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- breakthrough
- central axis
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Abstract
A kind of motor is disclosed herein, the breakthrough part of the circuit board of this motor is arranged in the circumference centered by central axis, circuit board is at least some of axially coincident with bearing portion, circuit board fixed part is arranged in the position than breakthrough part radial outside, and the lead-out wire drawn from coil is welded in welding disk by described breakthrough part.The circuit board of the motor of the present invention is not provided with through hole near central part, even if or it is provided with through hole, the size the most only making through hole is the size that axle can pass through, and circuit board fixed part is positioned at the position of radial outside than the breakthrough part that the lead-out wire of coil is passed through, thus improve the rigidity of circuit board and reduce the load that circuit board is subject to, thus can suppress or reduce circuit board deformation.
Description
Technical field
The present invention relates to a kind of motor, more particularly, to a kind of motor with improvement circuit board.
Background technology
Japanese documentation JP2007-166851A discloses a kind of motor, and this motor includes static
Portion, rotating part and bearing portion.As shown in Fig. 6 (a) and Fig. 6 (b), stationary part includes shell
1, stator core 2, circuit board 3 and stator coil 4.Outside circuit board 3 is fixed on by binding agent
On shell 1, the stator coil 4 being wound in stator core 2 is fixed on shell 1 by methods such as pressure people
On.Circuit board 3 is provided with otch 7 on its outer peripheral edge, and the conductor terminal 5 of stator coil 4 passes
This otch is also welded in the pad 6 on the lower surface being arranged in circuit board 3.But, existing at this
In motor disclosed in technology, for the central part that circuit board 3 is installed to shell 1, at circuit
The centre of plate 3 is provided with through hole (not shown).Therefore, the rigidity of circuit board 3 can decline.
Further, since conductor terminal 5 and the periphery portion contacts of circuit board 3, thus add along circuit
The load in downward direction of plate 3.Result creates the problem that circuit board in downward direction deforms.
Summary of the invention
It is an object of the invention to provide a kind of motor that can suppress or reduce circuit board deformation.
Above-mentioned purpose is to be realized by following motor, and this motor includes stationary part, along with up and down
Centered by the central axis in direction, the rotating part rotated relative to stationary part and bearing portion；Described quiet
Stop includes stator, circuit board and base portion；Described stator has stator core and by being wound around stator ferrum
The coil that the wire of core is constituted, and it is arranged in the radial outside of described bearing portion；Described circuit board
Have along the through multiple breakthrough parts of central axis, be arranged in the welding disk of lower surface and be fixed on institute
State the circuit board fixed part of base portion, and be arranged in the downside of described stator；And described base portion has
Keep stator maintaining part and the bearing cage of holding shaft bearing portion of stator；Described rotating part includes axle
And Magnet, described axle is positioned at the radially inner side of described bearing portion, and is supported for energy by described bearing portion
Enough rotate around described central axis relative to described stationary part；Described Magnet and described stator core
Circumferential surface opposed；Described breakthrough part is arranged in the circumference centered by central axis, described electricity
Road plate is at least some of axially coincident with described bearing portion, and described circuit board fixed part is arranged in
The ratio position of described breakthrough part radial outside, the lead-out wire drawn from described coil passes through the plurality of
Breakthrough part is welded in described welding disk.
The circuit board of the motor of the present invention is not provided with through hole near central part, even if or setting
Being equipped with through hole, the size the most only making through hole is the size that axle can pass through, and circuit board is solid
Determine portion and be positioned at the position of radial outside than the breakthrough part that the lead-out wire of coil is passed through, thus improve
The rigidity of circuit board also reduces the load that circuit board is subject to, thus can suppress or reduce circuit board
Deformation.
Accompanying drawing explanation
From the description of the exemplary be given below in conjunction with accompanying drawing, it should be clearly understood that this
The above and other aspects, features and advantages of invention, in the drawing:
Fig. 1 is the sectional view of the outer rotor motor of first embodiment of the present invention.
Fig. 2 is the upward view of the first embodiment of the circuit board of the motor of Fig. 1.
Fig. 3 is the upward view of the second embodiment of the circuit board of the motor of Fig. 1.
Fig. 4 is the sectional view of the inner-rotor type motor of second embodiment of the present invention.
Fig. 5 is the sectional view of a variation of the inner-rotor type motor of Fig. 4.
Fig. 6 (a) is the schematic plan of the motor of prior art；Fig. 6 (b) is Fig. 6 (a)
The schematic, bottom view of motor.
Detailed description of the invention
The embodiment of the motor of the present invention is specifically described below in reference to accompanying drawing.In all of the figs,
Same parts or structure will use identical reference to represent.Accompanying drawing is not drawn necessarily to scale.
Should be appreciated that the following examples and accompanying drawing are only illustrative, should not be viewed as a limitation this
Bright scope.
The language representing direction such as upper and lower, interior and outer that is previously mentioned in this specification merely to by
According to the orientation in accompanying drawing, embodiment is exemplarily described, it is no intended to limit the present invention.This area
Those of ordinary skill is appreciated that the statement in this specification relevant direction hereinafter described is according to reality
Operating position can change.
Fig. 1 is the sectional view of the outer rotor motor of first embodiment of the present invention.As schemed
Showing, motor 10 includes stationary part, along centered by the central axis OO ' of above-below direction and relatively
Rotating part and bearing portion in stationary part rotation.Stationary part includes stator 11, circuit board 12 and base
Portion 13.Stator 11 has stator core 14 and by the constituted line of wire of wound stator core 14
Circle 15.In the present embodiment, base portion 13 includes bearing cage 16 and the stator of a tubular
Maintaining part 17.Bearing portion includes that journal bearing 18, described journal bearing 18 are press-fitted to bearing and keep
On the inner surface in portion 16, and stator 11 is supported on the outer surface of bearing cage 16, and joins
Put the radial outside at bearing portion.Rotating part includes axle 19, Magnet 20 and rotor retainer 21.
Axle 19 is positioned at the radially inner side of journal bearing 18, and is supported for enclosing by journal bearing 18
Rotate relative to stationary part around central axis OO '；Magnet 20 is arranged on the footpath of rotor retainer 21
To inner side, opposed with the external peripheral surface of stator core 14, the footpath being positioned at stator core 14 is outside
Side.Circuit board 12 has along multiple breakthrough parts 22 through for central axis OO ', is arranged in following table
Multiple welding disks 23 on face and the circuit board fixed part 24 being fixed on base portion 13, and circuit
Plate 12 is arranged in the lower section of stator 11.Breakthrough part 22 is arranged in centered by central axis OO '
Circumference, circuit board fixed part 24 is arranged in the position than breakthrough part 22 radial outside, from coil
The lead-out wire 25 that 15 draw is welded in welding disk 23 by breakthrough part 22.Preferably, breakthrough part
22 are configured to be positioned at radially inner side relative to the outline of stator 11.Preferably, breakthrough part 22
Quantity equal in the quantity of welding disk 23.Preferably, the radial inner end of breakthrough part 22 and center
Axes O O ' distance L1 less than the radial inner end of circuit board fixed part 24 in central axis OO '
Distance L2.Being not provided with through hole near the central part of circuit board 12, described circuit board has
The part overlapped with described bearing portion.As it can be seen, stator maintaining part 17 can include the most prominent
The pedestal 28 gone out, circuit board fixed part 24 is fixed on stator maintaining part 17 by screw 26
Pedestal 28, pedestal 28 is positioned at radial outside relative to breakthrough part 22.But other embodiment party
In case, and the stator maintaining part 17 of circuit board fixed part 24 and base portion 13 can be consolidated by flange
It is scheduled on (described below) together.When being passed through circuit board 12 and lead-out wire 25 to coil by power supply
15 when providing electric current, the magnetic field that stator core 14 produces with obtained multistage magnet by being magnetized
Magnet 20 formed magnetic field interaction and on rotor retainer 21 produce rotating torque so that it is enclose
Rotate around the axle 19 as rotary shaft.
Fig. 2 is the upward view of the first embodiment of the circuit board of motor 10.Circuit board 12 ' includes edge
Through for central axis OO ' multiple breakthrough parts 22 ', configuration welding disk 23 ' on the lower surface and
Circuit board fixed part 24 '.As it can be seen, breakthrough part 22 ' can be through hole 221 or from electricity
The otch 222 that the outer rim of road plate 12 ' is cut open towards central axis OO '；Breakthrough part 22 ' can be at electricity
The circumferentially equidistant configuration of road plate 12 '；Welding disk 23 ' at least some of relative to breakthrough part 22 ' position
Position in radially inner side；Circuit board fixed part 24 ' can be through hole, and it passes through screw in fixed
Sub-maintaining part and be fixed together；From the radially inner side of welding disk 23 ' to central axis OO ' away from
From OC less than from the one of the central authorities of circuit board fixed part 24 ' distance OD to central axis OO '
Half.Preferably, breakthrough part 22 ' and welding disk 23 ' adjoin, and the lead-out wire of coil passes through breakthrough part
22 ' is directed towards radially inner side.It is highly preferred that breakthrough part 22 ' has opening 27 ' at radially inner side,
Welding disk 23 ' is configured along the edge of the radially inner side of opening 27 ', and the lead-out wire of coil is by opening
Mouth 27 ' is directed into welding disk 23 '.
Fig. 3 is the upward view of the second embodiment of the circuit board of the motor of Fig. 1.Circuit board 12 ' '
Multiple breakthrough parts 22 ' including through along central axis OO ' ', configuration welding disk on the lower surface
23 ' ' and circuit board fixed part 24 ' '.As it can be seen, breakthrough part 22 ' ' it is at circumferentially equidistant interval
Through hole；Described through hole is arranged in welding disk 23 ' ' middle position.
Fig. 4 is the sectional view of the inner-rotor type motor of second embodiment of the present invention.As schemed
Showing, motor 100 includes stationary part, along centered by the central axis OO ' of above-below direction and relatively
Rotating part and bearing portion in stationary part rotation.Stationary part includes stator 111, circuit board 112 and
Base portion 113.Stator 111 has stator core 114 and by the wire institute of wound stator core 114
Constitute coil 115.Base portion 113 includes the bearing cage 116 of holding shaft bearing portion and keeps fixed
The stator maintaining part 117 of son 111.Bearing portion has journal bearing 118.Journal bearing 118 is pressed
Fit on the inner surface of bearing cage 116, and stator 111 is supported on stator maintaining part 117
On inner surface, and it is arranged in the axial downside of bearing portion.Rotating part includes axle 119 and Magnet 120.
Axle 119 is positioned at the radially inner side of journal bearing 18, and is supported for enclosing by journal bearing 18
Rotate relative to stationary part around central axis OO '；Magnet 120 be arranged on axle 119 relative to footpath
To the other end of bearing, opposed with the inner circumferential surface of stator core 114.The inner-rotor type of Fig. 4
Motor 100 is with the difference of the outer rotor motor 10 of Fig. 1: Magnet 120 is positioned at stator ferrum
The radially inner side of core 114；Passing through of being intended for that axle 119 passes through it is provided with near the central part of circuit board 112
Through hole.As it can be seen, circuit board 112 in the part of bearing portion axially coincident.Circuit board
112 have along multiple breakthrough parts 122 through for central axis OO ', configuration the most
Individual welding disk 123 and the circuit board fixed part 124 being fixed on base portion 113, and circuit board 112
It is arranged in the lower section of stator 111.Breakthrough part 122 is arranged in the week centered by central axis OO '
To, circuit board fixed part 124 is arranged in the position than breakthrough part 122 radial outside, from coil
The lead-out wire 125 that 115 draw is welded in welding disk 123 by breakthrough part 122.As shown in Figure 4,
Stator maintaining part 117 can include radially projecting pedestal 128.Circuit board fixed part 124 is fixed
In stator maintaining part 117 pedestal 128(preferably, by screw 126), pedestal 128 phase
Radial outside is positioned at for breakthrough part 122.
Fig. 5 is the sectional view of a variation of the inner-rotor type motor of Fig. 4.The motor of Fig. 5
100 ' with the 100 of Fig. 4 differ primarily in that: the circuit board fixed part 124 ' of circuit board 112 '
It is fixed together by the flange 129 of stator maintaining part 117 ' with stator maintaining part 117 '.
It is understood that present disclosure is not limited to above-mentioned embodiment and embodiment.?
In the case of spirit and scope without departing from present disclosure appended claims, can be to these public affairs
Open content and carry out multiple amendment and transformation.
In the motor of the present invention, the breakthrough part of circuit board is arranged in the week centered by central axis
To, circuit board is at least some of axially coincident with bearing portion, and circuit board fixed part is arranged in ratio
The position of breakthrough part radial outside, the lead-out wire drawn from coil is welded in weldering by described breakthrough part
Dish portion.The circuit board of the motor of the present invention is not provided with through hole near central part, even if or
Being provided with through hole, the size the most only making through hole is the size that axle can pass through, and circuit board
Fixed part is positioned at the position of radial outside than the breakthrough part that the lead-out wire of coil is passed through, thus improves
The rigidity of circuit board also reduces the load that circuit board is subject to, thus can suppress or reduce circuit
Plate deforms.
In an exemplary of the present invention, described Magnet is positioned at the footpath of described stator core
Laterally.The motor of the present invention is outer rotor motor.
In an exemplary of the present invention, described Magnet is positioned at the footpath of described stator core
To inner side.The motor of the present invention is inner-rotor type motor.
In an exemplary of the present invention, described welding disk at least some of relative to
Described breakthrough part is positioned at the position of radially inner side.By welding disk being arranged near radially inner side
Position such that it is able to make the position being located proximate to radially inner side of welding.Result is to suppress electricity
The deformation of road plate.
In an exemplary of the present invention, from the radially inner side of described welding disk to described
The distance of central axis less than from the central authorities of described circuit board fixed part to described central axis away from
From less than half.So can the deformation of suppression circuit plate further.
In an exemplary of the present invention, described breakthrough part and described welding disk adjoin,
Described lead-out wire is directed towards radially inner side by described breakthrough part.Thus avoid lead-out wire and circuit
The contact at the edge of the conducting portion of plate, is so prevented from conductor cord disconnection.
In an exemplary of the present invention, described breakthrough part has opening at radially inner side,
Described welding disk is configured along the edge of the radially inner side of described opening, and described lead-out wire passes through institute
State opening and be directed into described welding disk.Because lead-out wire is winding towards radially inner side such that it is able to
Reduce the edge part of lead-out wire contact circuit board and be added to the load of circuit board.Structure is to enter
The deformation of one step suppression circuit plate.
In an exemplary of the present invention, described breakthrough part is in circumferentially equidistant configuration
Through hole.It is able to ensure that circuit board keeps poised state.
In an exemplary of the present invention, described through hole is arranged in described welding disk
Middle position.Lead-out wire can be in the state drawn in centerline axis parallel be welded on pad.
Result is to avoid the contacting of edge of the through hole with circuit board such that it is able to prevent broken string.
In an exemplary of the present invention, described breakthrough part in circumferentially equidistant configuration, and
For the otch being cut open towards central axis from the outer rim of described circuit board.So it is easy to drawing of lead-out wire
Around.
In an exemplary of the present invention, described welding disk at least some of relative to
Described otch is positioned at the position of radially inner side.Thus avoid the limit of the conducting portion of lead-out wire and circuit board
The contact of edge, is so prevented from conductor cord disconnection.
In an exemplary of the present invention, described breakthrough part and the quantity of described welding disk
Equal.Each lead-out wire can be drawn easily.
In an exemplary of the present invention, described breakthrough part is configured to fixed relative to described
The outline of son is positioned at radially inner side.By breakthrough part is arranged in radially inner side, at lead-out wire
It is not easy to produce stress.
In an exemplary of the present invention, the radial inner end of described breakthrough part with described in
The distance of mandrel line less than described circuit board fixed part radial inner end and described central axis away from
From.Thus circuit board is not easy deformation, and it is easily installed.
In an exemplary of the present invention, described stator maintaining part has pedestal, described
Circuit board fixed part is fixed on the pedestal of described stator maintaining part, and described pedestal is through relative to described
Portion is positioned at radial outside.It is easy to the fixing of circuit board, and avoids lead-out wire to contact with pedestal.
In an exemplary of the present invention, described circuit board fixed part is protected with described stator
Portion of holding is fixed together by screw or flange.It is easy to the fixing of circuit board.
Claims (16)
1. a motor, including stationary part, edge centered by the central axis of above-below direction,
The rotating part rotated relative to stationary part and bearing portion,
Described stationary part includes stator, circuit board and base portion,
Described stator has stator core and is made up of the wire of wound stator core
Coil, and be arranged in the radial outside of described bearing portion；
Described circuit board has along the through multiple breakthrough parts of central axis, is arranged in down
The welding disk on surface and the circuit board fixed part being fixed on described base portion, and configure
Downside at described stator；And
Described base portion has stator maintaining part and the axle of holding shaft bearing portion keeping stator
Hold maintaining part；
Described rotating part includes axle and Magnet,
Described axle is positioned at the radially inner side of described bearing portion, and is supported by described bearing portion
For rotating around described central axis relative to described stationary part；
Described Magnet is opposed with the circumferential surface of described stator core；
It is characterized in that: described breakthrough part is arranged in the circumference centered by central axis,
Described circuit board is at least some of axially coincident with described bearing portion, described circuit board
Fixed part is arranged in the radial outside of described breakthrough part, the lead-out wire drawn from described coil
It is welded in described welding disk by the plurality of breakthrough part.
Motor the most according to claim 1, it is characterised in that described Magnet is positioned at
The radial outside of described stator core.
Motor the most according to claim 1, it is characterised in that described Magnet is positioned at
The radially inner side of described stator core.
4. according to the motor according to any one of claim 1-3, it is characterised in that institute
State at least some of position being positioned at radially inner side relative to described breakthrough part of welding disk.
Motor the most according to claim 4, it is characterised in that from described welding disk
Radially inner side to the distance of described central axis less than from described circuit board fixed part
Central authorities are to the half of the distance of described central axis.
Motor the most according to claim 4, it is characterised in that described breakthrough part and
Described welding disk adjoins, and described lead-out wire is directed towards radially inner side by described breakthrough part.
Motor the most according to claim 6, it is characterised in that described breakthrough part exists
Radially inner side has opening, and described welding disk is along the edge of the radially inner side of described opening
Being configured, described lead-out wire is directed into described welding disk by described opening.
8. according to the motor according to any one of claim 1-3, it is characterised in that institute
Stating breakthrough part is the through hole in circumferentially equidistant configuration.
Motor the most according to claim 8, it is characterised in that described through hole is joined
Put the middle position at described welding disk.
10. according to the motor according to any one of claim 1-3, it is characterised in that institute
State breakthrough part in circumferentially equidistant configuration, and be towards central axis from the outer rim of described circuit board
The otch being cut open.
11. motors according to claim 10, it is characterised in that described welding disk
At least some of position being positioned at radially inner side relative to described otch.
12. according to the motor according to any one of claim 1-3, it is characterised in that institute
State breakthrough part equal with the quantity of described welding disk.
13. according to the motor according to any one of claim 1-3, it is characterised in that institute
State breakthrough part to be configured to be positioned at radially inner side relative to the outline of described stator.
14. according to the motor according to any one of claim 1-3, it is characterised in that institute
State the radial inner end of breakthrough part solid less than described circuit board with the distance of described central axis
Determine the radial inner end in portion and the distance of described central axis.
15. according to the motor according to any one of claim 1-3, it is characterised in that institute
Stating stator maintaining part and have pedestal, described circuit board fixed part is fixed on described stator and keeps
The pedestal in portion, described pedestal is positioned at radial outside relative to described breakthrough part.
16. according to the motor according to any one of claim 1-3, it is characterised in that institute
State circuit board fixed part to be fixed on by screw or flange with described stator maintaining part
Together.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120398.8A CN104104188B (en) | 2013-04-09 | 2013-04-09 | There is the motor improving circuit board |
| US14/243,019 US9231454B2 (en) | 2013-04-09 | 2014-04-02 | Motor provided with a printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120398.8A CN104104188B (en) | 2013-04-09 | 2013-04-09 | There is the motor improving circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104104188A CN104104188A (en) | 2014-10-15 |
| CN104104188B true CN104104188B (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310120398.8A Active CN104104188B (en) | 2013-04-09 | 2013-04-09 | There is the motor improving circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104104188B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019022311A (en) * | 2017-07-14 | 2019-02-07 | 日本電産株式会社 | Motor manufacturing method and motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130526A (en) * | 2010-01-12 | 2011-07-20 | 日本电产株式会社 | Motor and motor manufacturing method |
| CN102362413A (en) * | 2009-03-24 | 2012-02-22 | 罗伯特·博世有限公司 | Electric motor |
| CN203180725U (en) * | 2013-04-09 | 2013-09-04 | 日本电产株式会社 | Motor with improved circuit board |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8324771B2 (en) * | 2008-02-06 | 2012-12-04 | Nidec Corporation | Spindle motor and storage disk drive apparatus |
| EP2793369B1 (en) * | 2011-12-13 | 2017-07-19 | Mitsubishi Electric Corporation | Motor with built-in power conversion device, air conditioner with same motor built-in, water heater, and ventilation blower equipment |
-
2013
- 2013-04-09 CN CN201310120398.8A patent/CN104104188B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102362413A (en) * | 2009-03-24 | 2012-02-22 | 罗伯特·博世有限公司 | Electric motor |
| CN102130526A (en) * | 2010-01-12 | 2011-07-20 | 日本电产株式会社 | Motor and motor manufacturing method |
| CN203180725U (en) * | 2013-04-09 | 2013-09-04 | 日本电产株式会社 | Motor with improved circuit board |
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| Publication number | Publication date |
|---|---|
| CN104104188A (en) | 2014-10-15 |
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