CN104104188A - Motor with improved circuit board - Google Patents
Motor with improved circuit board Download PDFInfo
- Publication number
- CN104104188A CN104104188A CN201310120398.8A CN201310120398A CN104104188A CN 104104188 A CN104104188 A CN 104104188A CN 201310120398 A CN201310120398 A CN 201310120398A CN 104104188 A CN104104188 A CN 104104188A
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- circuit board
- motor
- stator
- breakthrough
- central axis
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Abstract
Disclosed is a motor with an improved circuit board. Disclosed is a motor and cutthrough parts of the circuit board of the motor are arranged in a circumferential direction, a central axis being the center. The circuit board coincides with at least part of a bearing part in the axial direction. Fixed parts of the circuit board are configured at positions which are at the outer side of the axial direction of the cutthrough parts. Lead-out wires which are led out from coils are welded on bonding pad parts through the cutthrough parts. The circuit board of the motor is not provided with any cutthrough hole near a central part or even if the circuit board is provided with a cutthrough hole near a central part, the size of the cutthrough hole is made be a size which allows a shaft to pass. Moreover, the fixed parts of the circuit board are at the position which are at the outer side of the axial direction of the cutthrough parts which the lead-out wires of the coils pass so that the rigidness of the circuit board is improved and a load which the circuit board is subjected to is reduced and thus circuit board deformation is restrained or reduced.
Description
Technical field
The present invention relates to a kind of motor, more specifically, relate to a kind of motor that improves circuit board that has.
Background technology
Japanese documentation JP2007-166851A discloses a kind of motor, and this motor comprises stationary part, rotating part and bearing portion.As shown in Fig. 6 (a) and Fig. 6 (b), stationary part comprises shell 1, stator core 2, circuit board 3 and stator coil 4.Circuit board 3 is fixed on shell 1 by binding agent, is wound in the stator coil 4 of stator core 2 by pressing the methods such as people to be fixed on shell 1.Circuit board 3 is provided with otch 7 in its outer peripheral edges, and the conductor terminal 5 of stator coil 4 is through this otch and be welded in the pad 6 on the lower surface that is configured in circuit board 3.Yet, in the prior art in disclosed motor, for circuit board 3 being mounted to the central portion of shell 1, in the centre of circuit board 3, be provided with through hole (not shown).Therefore, the rigidity of circuit board 3 can decline.In addition, because conductor terminal 5 contacts with the periphery edge of circuit board 3, thereby increased along the load of the downward direction of circuit board 3.Result has produced the problem of circuit board downward direction distortion.
Summary of the invention
Object of the present invention is just to provide a kind of motor that can suppress or reduce circuit board distortion.
Above-mentioned purpose is to realize by following motor, and this motor comprises that stationary part, edge are centered by the central axis of above-below direction, with respect to rotating part and the bearing portion of stationary part rotation; Described stationary part comprises stator, circuit board and base portion; The coil that described stator has stator core and consists of the wire of wound stator core, and be configured in the radial outside of described bearing portion; Described circuit board has a plurality of breakthrough parts of connecting along central axis, be configured in the welding disk of lower surface and be fixed on the circuit board fixed part of described base portion, and is configured in the downside of described stator; And described base portion has the stator maintaining part that keeps stator and the bearing cage that keeps bearing portion; Described rotating part comprises axle and magnet, and described axle is positioned at the radially inner side of described bearing portion, and is supported for and can with respect to described stationary part, rotates around described central axis by described bearing portion; The circumferential surface of described magnet and described stator core is opposed; Described breakthrough part be configured in centered by central axis circumferentially, described circuit board overlaps axial with at least a portion of described bearing portion, described circuit board fixed part is configured in than the position of described breakthrough part radial outside, and the lead-out wire of drawing from described coil is welded in described welding disk by described a plurality of breakthrough parts.
The circuit board of motor of the present invention does not arrange through hole near central portion, even if or be provided with through hole, also the size that only makes 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 lead-out wire passed through of coil, thereby improved the rigidity of circuit board and reduced the load that circuit board is subject to, thereby can suppress or reduce circuit board distortion.
Accompanying drawing explanation
From the description of the exemplary that provides below in conjunction with accompanying drawing, can be expressly understood above and other aspects, features and advantages of the present invention, in described accompanying drawing:
Fig. 1 is the cutaway view of the outer-rotor type motor of first embodiment of the present invention.
Fig. 2 is the upward view of the first embodiment of circuit board of the motor of Fig. 1.
Fig. 3 is the upward view of the second embodiment of circuit board of the motor of Fig. 1.
Fig. 4 is the cutaway view of the inner-rotor type motor of second embodiment of the present invention.
Fig. 5 is the cutaway 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 the schematic, bottom view of the motor of Fig. 6 (a).
Embodiment
Below specifically describe with reference to the accompanying drawings the embodiment of motor of the present invention.In institute's drawings attached, same parts or structure will represent with identical Reference numeral.Accompanying drawing is not necessarily drawn in proportion.Should be appreciated that the following examples and accompanying drawing are only illustrative, should not be regarded as limiting the scope of the invention.
The language of the expression direction such as upper and lower, interior and outer of mentioning in this specification is only, for the orientation according in accompanying drawing, embodiment is exemplarily described, is not intended to limit the present invention.The statement that persons of ordinary skill in the art may appreciate that this specification concerned direction hereinafter described can change according to real work position.
Fig. 1 is the cutaway view of the outer-rotor type motor of first embodiment of the present invention.As shown in the figure, motor 10 comprise stationary part, along centered by the central axis OO ' of above-below direction and with respect to rotating part and the bearing portion of stationary part rotation.Stationary part comprises stator 11, circuit board 12 and base portion 13.Stator 11 has stator core 14 and by the coil that wire forms 15 of wound stator core 14.In the present embodiment, base portion 13 comprises bearing cage 16 and the stator maintaining part 17 of a tubular.Bearing portion comprises journal bearing 18, and described journal bearing 18 press fit on the inner surface of bearing cage 16, and stator 11 is supported on the outer surface of bearing cage 16, and is configured in the radial outside of bearing portion.Rotating part comprises 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 and can with respect to stationary part, rotates around central axis OO ' by journal bearing 18; Magnet 20 is arranged on the radially inner side of rotor retainer 21, opposed with the external peripheral surface of stator core 14, is positioned at the radial outside of stator core 14.Circuit board 12 has a plurality of breakthrough parts 22 of connecting along central axis OO ', be configured in a plurality of welding disks 23 on lower surface and be fixed on the circuit board fixed part 24 of base portion 13, and circuit board 12 is configured in the below of stator 11.Breakthrough part 22 be configured in centered by central axis OO ' circumferentially, circuit board fixed part 24 is configured in than the position of breakthrough part 22 radial outsides, the lead-out wire 25 of drawing from coil 15 is welded in welding disk 23 by breakthrough part 22.Preferably, breakthrough part 22 is configured to be positioned at radially inner side with respect to the outline of stator 11.Preferably, the quantity of breakthrough part 22 equates in the quantity of welding disk 23.Preferably, the distance L 1 of the radial inner end of breakthrough part 22 and central axis OO ' is less than the radial inner end of circuit board fixed part 24 in the distance L 2 of central axis OO '.Through hole is not set near the central portion of circuit board 12, and described circuit board has the part overlapping with described bearing portion.As shown in the figure, stator maintaining part 17 can comprise radially outstanding pedestal 28, and circuit board fixed part 24 is fixed on the pedestal 28 of stator maintaining part 17 by screw 26, and pedestal 28 is positioned at radial outside with respect to breakthrough part 22.But the stator maintaining part 17 of circuit board fixed part 24 and base portion 13 can be fixed together by flange (below having description) in other embodiments.When providing electric current by circuit board 12 and lead-out wire 25 to coil 15 by power supply, the magnetic field interaction that the magnetic field that stator core 14 produces and the magnet 20 that obtains multistage magnet by being magnetized form and the moment that rotates on rotor retainer 21 makes it around axle 19 rotations as rotation axis.
Fig. 2 is the upward view of the first embodiment of the circuit board of motor 10.Circuit board 12 ' comprises along a plurality of breakthrough parts 22 ' of central axis OO ' perforation, is configured in welding disk 23 ' and circuit board fixed part 24 ' on lower surface.As shown in the figure, breakthrough part 22 ' can be through hole 221 or the otch 222 that is cut open towards central axis OO ' from the outer rim of circuit board 12 '; Breakthrough part 22 ' can be in the circumferentially equidistant configuration of circuit board 12 '; At least a portion of welding disk 23 ' is positioned at the position of radially inner side with respect to breakthrough part 22 '; Circuit board fixed part 24 ' can be through hole, and it is fixed together in stator maintaining part by screw; Distance OC from the radially inner side of welding disk 23 ' to central axis OO ' is less than half of distance OD from the central authorities of circuit board fixed part 24 ' to central axis OO '.Preferably, breakthrough part 22 ' and welding disk 23 ' adjacency, the lead-out wire of coil is directed towards radially inner side by breakthrough part 22 '.More preferably, breakthrough part 22 ' has opening 27 ' at radially inner side, and welding disk 23 ' is configured along the edge of the radially inner side of opening 27 ', and the lead-out wire of coil is directed into welding disk 23 ' by opening 27 '.
Fig. 3 is the upward view of the second embodiment of circuit board of the motor of Fig. 1.Circuit board 12 ' ' comprise a plurality of breakthrough parts 22 ' that connect along central axis OO ' ', be configured in the welding disk 23 ' on lower surface ' and circuit board fixed part 24 ' '.As shown in the figure, breakthrough part 22 ' ' be the through hole in circumferential equi-spaced apart; Described through hole is configured in welding disk 23 ' ' middle position.
Fig. 4 is the cutaway view of the inner-rotor type motor of second embodiment of the present invention.As shown in the figure, motor 100 comprise stationary part, along centered by the central axis OO ' of above-below direction and with respect to rotating part and the bearing portion of stationary part rotation.Stationary part comprises stator 111, circuit board 112 and base portion 113.Stator 111 has stator core 114 and by the coil that wire forms 115 of wound stator core 114.Base portion 113 comprises the stator maintaining part 117 of the bearing cage 116 and the maintenance stator 111 that keep bearing portion.Bearing portion has journal bearing 118.Journal bearing 118 press fit on the inner surface of bearing cage 116, and stator 111 is supported on the inner surface of stator maintaining part 117, and is configured in the axial downside of bearing portion.Rotating part comprises axle 119 and magnet 120.Axle 119 is positioned at the radially inner side of journal bearing 18, and is supported for and can with respect to stationary part, rotates around central axis OO ' by journal bearing 18; Magnet 120 is arranged on the other end with respect to journal bearing of axle 119, opposed with the inner circumferential surface of stator core 114.The inner-rotor type motor 100 of Fig. 4 is with the difference of the outer-rotor type motor 10 of Fig. 1: magnet 120 is positioned at the radially inner side of stator core 114; Near the central portion of circuit board 112, be provided with the through hole only passing through for axle 119.As shown in the figure, circuit board 112 in a part for bearing portion in axial coincidence.Circuit board 112 has a plurality of breakthrough parts 122 of connecting along central axis OO ', be configured in a plurality of welding disks 123 on lower surface and be fixed on the circuit board fixed part 124 of base portion 113, and circuit board 112 is configured in the below of stator 111.Breakthrough part 122 be configured in centered by central axis OO ' circumferentially, circuit board fixed part 124 is configured in than the position of breakthrough part 122 radial outsides, the lead-out wire 125 of drawing from coil 115 is welded in welding disk 123 by breakthrough part 122.As shown in Figure 4, stator maintaining part 117 can comprise radially outstanding pedestal 128.The pedestal 128(that circuit board fixed part 124 is fixed on stator maintaining part 117 preferably, by screw 126), pedestal 128 is positioned at radial outside with respect to breakthrough part 122.
Fig. 5 is the cutaway view of a variation of the inner-rotor type motor of Fig. 4.100 the main distinction of the motor 100 ' of Fig. 5 and Fig. 4 is: the circuit board fixed part 124 ' of circuit board 112 ' is fixed together with the flange 129 of stator maintaining part 117 ' by stator maintaining part 117 '.
Be understandable that, present disclosure is not limited to above-mentioned embodiment and embodiment.In the situation that do not depart from the spirit and scope of present disclosure appended claims, can carry out multiple modification and transformation to present disclosure.
In motor of the present invention, the breakthrough part of circuit board be configured in centered by central axis circumferentially, circuit board overlaps axial with at least a portion of bearing portion, circuit board fixed part is configured in the position than breakthrough part radial outside, and the lead-out wire of drawing from coil is welded in welding disk by described breakthrough part.The circuit board of motor of the present invention does not arrange through hole near central portion, even if or be provided with through hole, also the size that only makes 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 lead-out wire passed through of coil, thereby improved the rigidity of circuit board and reduced the load that circuit board is subject to, thereby can suppress or reduce circuit board distortion.
In an exemplary of the present invention, described magnet is positioned at the radial outside of described stator core.Motor of the present invention is outer-rotor type motor.
In an exemplary of the present invention, described magnet is positioned at the radially inner side of described stator core.Motor of the present invention is inner-rotor type motor.
In an exemplary of the present invention, at least a portion of described welding disk is positioned at the position of radially inner side with respect to described breakthrough part.By welding disk being configured in to the position near radially inner side, thereby can make the position of welding near the position of radially inner side.Result is to suppress the distortion of circuit board.
In an exemplary of the present invention, the distance from the radially inner side of described welding disk to described central axis is less than below half of distance from the central authorities of described circuit board fixed part to described central axis.Can further suppress the distortion of circuit board like this.
In an exemplary of the present invention, described breakthrough part and described welding disk adjacency, described lead-out wire is directed towards radially inner side by described breakthrough part.Thereby the contacting of edge of avoiding the conducting portion of lead-out wire and circuit board, can prevent conductor cord disconnection like this.
In an exemplary of the present invention, described breakthrough part has opening at radially inner side, and described welding disk is configured along the edge of the radially inner side of described opening, and described lead-out wire is directed into described welding disk by described opening.Because lead-out wire towards radially inner side drawn around, thereby can reduce the edge part of lead-out wire contact circuit plate and add the load to circuit board.Structure is further to suppress the distortion of circuit board.
In an exemplary of the present invention, described breakthrough part is the through hole equidistantly configuring circumferentially.Can guarantee that circuit board keeps poised state.
In an exemplary of the present invention, described through hole is configured in the middle position of described welding disk.Can be by lead-out wire in being welded on pad in the parallel state of drawing of central axis.Result is to avoid and the contacting of the edge of the through hole of circuit board, thereby can prevent broken string.
In an exemplary of the present invention, described breakthrough part is in circumferentially equidistant configuration, and the otch being cut open towards central axis for the outer rim from described circuit board.Be convenient to like this lead-out wire draw around.
In an exemplary of the present invention, at least a portion of described welding disk is positioned at the position of radially inner side with respect to described otch.Thereby the contacting of edge of avoiding the conducting portion of lead-out wire and circuit board, can prevent conductor cord disconnection like this.
In an exemplary of the present invention, described breakthrough part equates with the quantity of described welding disk.Can draw easily each lead-out wire.
In an exemplary of the present invention, described breakthrough part is configured to be positioned at radially inner side with respect to the outline of described stator.By breakthrough part is configured in to radially inner side, at lead-out wire place, be not easy to produce stress.
In an exemplary of the present invention, the radial inner end of described breakthrough part and the distance of described central axis are less than the radial inner end of described circuit board fixed part and the distance of described central axis.Thereby circuit board is not easy distortion, and be convenient to install.
In an exemplary of the present invention, described stator maintaining part has pedestal, and described circuit board fixed part is fixed on the pedestal of described stator maintaining part, and described pedestal is positioned at radial outside with respect to described breakthrough part.Be convenient to the fixing of circuit board, and avoid lead-out wire to contact with pedestal.
In an exemplary of the present invention, described circuit board fixed part and described stator maintaining part are fixed together by screw or flange.Be convenient to the fixing of circuit board.
Claims (16)
1. a motor, comprises that stationary part, edge are centered by the central axis of above-below direction, with respect to rotating part and the bearing portion of stationary part rotation,
Described stationary part comprises stator, circuit board and base portion,
The coil that described stator has stator core and consists of the wire of wound stator core, and be configured in the radial outside of described bearing portion;
Described circuit board has a plurality of breakthrough parts of connecting along central axis, be configured in the welding disk of lower surface and be fixed on the circuit board fixed part of described base portion, and is configured in the downside of described stator; And
Described base portion has the stator maintaining part that keeps stator and the bearing cage that keeps bearing portion;
Described rotating part comprises axle and magnet,
Described axle is positioned at the radially inner side of described bearing portion, and is supported for and can with respect to described stationary part, rotates around described central axis by described bearing portion;
The circumferential surface of described magnet and described stator core is opposed;
It is characterized in that: described breakthrough part be configured in centered by central axis circumferentially, described circuit board overlaps axial with at least a portion of described bearing portion, described circuit board fixed part is configured in than the position of described breakthrough part radial outside, and the lead-out wire of drawing from described coil is welded in described welding disk by described a plurality of breakthrough parts.
2. motor according to claim 1, is characterized in that, described magnet is positioned at the radial outside of described stator core.
3. motor according to claim 1, is characterized in that, described magnet is positioned at the radially inner side of described stator core.
4. according to the motor described in any one in claim 1-3, it is characterized in that, at least a portion of described welding disk is positioned at the position of radially inner side with respect to described breakthrough part.
5. motor according to claim 4, is characterized in that, the distance from the radially inner side of described welding disk to described central axis is less than below half of distance from the central authorities of described circuit board fixed part to described central axis.
6. motor according to claim 4, is characterized in that, described breakthrough part and described welding disk adjacency, and described lead-out wire is directed towards radially inner side by described breakthrough part.
7. motor according to claim 6, is characterized in that, described breakthrough part has opening at radially inner side, and described welding disk is configured along the edge of the radially inner side of described opening, and described lead-out wire is directed into described welding disk by described opening.
8. according to the motor described in any one in claim 1-3, it is characterized in that, described breakthrough part is the through hole equidistantly configuring circumferentially.
9. motor according to claim 8, is characterized in that, described through hole is configured in the middle position of described welding disk.
10. according to the motor described in any one in claim 1-3, it is characterized in that, described breakthrough part is in circumferentially equidistant configuration, and the otch being cut open towards central axis for the outer rim from described circuit board.
11. motors according to claim 10, is characterized in that, at least a portion of described welding disk is positioned at the position of radially inner side with respect to described otch.
12. according to the motor described in any one in claim 1-3, it is characterized in that, described breakthrough part equates with the quantity of described welding disk.
13. according to the motor described in any one in claim 1-3, it is characterized in that, described breakthrough part is configured to be positioned at radially inner side with respect to the outline of described stator.
14. according to the motor described in any one in claim 1-3, it is characterized in that, the radial inner end of described breakthrough part and the distance of described central axis are less than the radial inner end of described circuit board fixed part and the distance of described central axis.
15. according to the motor described in any one in claim 1-3, it is characterized in that, described stator maintaining part has pedestal, and described circuit board fixed part is fixed on the pedestal of described stator maintaining part, and described pedestal is positioned at radial outside with respect to described breakthrough part.
16. according to the motor described in any one in claim 1-3, it is characterized in that, described circuit board fixed part and described stator maintaining part are fixed together by screw or flange.
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 true CN104104188A (en) | 2014-10-15 |
| CN104104188B 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 |
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| Country | Link |
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| CN (1) | CN104104188B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256911A (en) * | 2017-07-14 | 2019-01-22 | 日本电产株式会社 | motor manufacturing method and motor |
Citations (5)
| 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 |
| US20130050874A1 (en) * | 2008-02-06 | 2013-02-28 | Nidec Corporation | Spindle motor and storage disk drive apparatus |
| CN203180725U (en) * | 2013-04-09 | 2013-09-04 | 日本电产株式会社 | Motor with improved circuit board |
| US20140311716A1 (en) * | 2011-12-13 | 2014-10-23 | Mitsubishi Electric Corporation | Motor incorporating power converter, and air conditioner, water heater, and ventilation blower incorporating the motor |
-
2013
- 2013-04-09 CN CN201310120398.8A patent/CN104104188B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130050874A1 (en) * | 2008-02-06 | 2013-02-28 | Nidec Corporation | Spindle motor and storage disk drive apparatus |
| 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 |
| US20140311716A1 (en) * | 2011-12-13 | 2014-10-23 | Mitsubishi Electric Corporation | Motor incorporating power converter, and air conditioner, water heater, and ventilation blower incorporating the motor |
| CN203180725U (en) * | 2013-04-09 | 2013-09-04 | 日本电产株式会社 | Motor with improved circuit board |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256911A (en) * | 2017-07-14 | 2019-01-22 | 日本电产株式会社 | motor manufacturing method and motor |
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| Publication number | Publication date |
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| CN104104188B (en) | 2016-09-14 |
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