CN203537083U - Motor and air-supplying fan comprising motor - Google Patents
Motor and air-supplying fan comprising motor Download PDFInfo
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- CN203537083U CN203537083U CN201320663824.8U CN201320663824U CN203537083U CN 203537083 U CN203537083 U CN 203537083U CN 201320663824 U CN201320663824 U CN 201320663824U CN 203537083 U CN203537083 U CN 203537083U
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- protuberance
- insulator
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- bearing
- axial
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- 239000012212 insulator Substances 0.000 claims abstract description 63
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 230000004323 axial length Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
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Abstract
The utility model provides a motor and an air-supplying fan comprising the motor. An inner circumferential surface of at least one of an upper insulator and a lower insulator of the motor is provided with at least one projecting part projecting towards a radial inner side. An outer circumferential surface of a bearing cylindrical part of the motor is provided with a first projection, a second projection and a third projection which project towards a radial outer side; the first projection, the second projection and the third projection form a groove in a surrounded manner; the second projection forms an axial upper end wall of the groove, and the first projection and the third projection respectively form relative circumferential side walls of the groove; and the groove accommodates the projecting part, the projecting part and the second projection are overlapped in the axial direction to form an axial anti-pull structure, and overlaps in the circumferential direction are provided between the projecting part and the first projection and between the projecting part and the third projection to form circumferential anti-pull structures. Radial miniaturization of the motor can be achieved, and the duty ratio of a coil can be improved at the same time.
Description
Technical field
The utility model relates to a kind of motor and comprises the Air Blast fan of this motor.
Background technology
Motor for Air Blast fan has stationary part and rotating part.Described stationary part comprises bearing cage and is fixed on the stator of the outer surface of described bearing cage.Can adopt binding agent that stator is fixed on to bearing cage.Yet the maintenance intensity of binding agent declines under hot environment, loosening thereby stator and bearing cage there will be, therefore need a kind of anti-structure that pulls out of machinery that does not rely on adhesive.For example, JP2012-139004A discloses a kind of motor for Air Blast fan.This motor has: rotating part, and this rotating part comprises axle and rotor magnet, and rotates around the central axis of this axle; Stator, comprises stator core, insulator and by means of insulator, is wound in the coil of stator core, have in the central the patchhole extending along above-mentioned central axis, this stator is arranged to the radially inner side that is positioned at above-mentioned rotor magnet; Bearing cage, has bearing cylindrical portion and the bearing base plate of substantial cylindrical, and this bearing cylindrical portion can be inserted into inserting in the hole of described stator, and rotatably supports described axle by being arranged in the bearing of its inner surface; Elastic component, its between described stator and described bearing base plate for supporting described stator.As shown in Fig. 1 (a), on the outer surface of bearing cylindrical portion (15), be provided with towards radially outstanding protuberance (15b).As shown in Fig. 1 (b), on the inner surface of insulator (32), have abutting part (45), with abutting part (45) upwards arrange in same week axially by portion (46), circumferentially by portion (47) and flexible claw (48).Axially by portion (46), be set to make protuberance (15b) to be positioned at axially by portion (46) when bearing cylindrical portion (15) is inserted the patchhole (30) of stator; Then, swivel bearing cylindrical portion (15), is circumferentially set to because distortion protuberance (15) is from axially moving by side to abutting part (45) side by portion (46) by portion (47).Flexible claw (48) restriction protuberance (15b) circumferential movement, and under the effect of elastic component (not shown) that is positioned at bearing base plate (14), abutting part (45) central axial direction from below near protuberance (15b), thereby realize fixing with respect to bearing cage of stator.
Yet, in the situation that the external diameter of motor is defined as certain size, in JP2012-139004A, disclosed motor is because the radial thickness of the ledge of insulator increases, and the radial dimension of the tooth of insulator just diminishes so, result causes the duty ratio of coil to diminish, and affects the characteristic of motor.
Therefore, need a kind of motor that can improve the duty ratio of coil.
Utility model content
The purpose of this utility model is just to provide a kind of motor with high coil duty ratio.
Above-mentioned purpose is to realize by following motor, and this motor has stationary part and rotating part, described stationary part comprises stator core, insulator, coil, bearing cage and bearing, described stator core is formed by magnet, described insulator covers described stator core, and described insulator comprises upper insulator and lower insulator, and described upper insulator covers the axial upside of described stator core, and described lower insulator covers the axial downside of described stator core, described coil is wound in described stator core by described insulator, described bearing cage has bearing cylindrical portion and the bearing base plate that keeps described bearing, described rotating part by described bearings for rotating, at least one party in described upper insulator and described lower insulator within it side face has towards at least one outstanding protuberance of radially inner side, described bearing cylindrical portion is provided with towards the first outstanding protuberance of radial outside on its outer peripheral face, the second protuberance and the 3rd protuberance, by described the first protuberance, described the second protuberance and described the 3rd protuberance surround and are formed with groove, described the second protuberance forms the upper axial end wall of described groove, described the first protuberance and described the 3rd protuberance form respectively the relative circumferential side wall of described groove, described groove holds described protuberance, described protuberance and described the second protuberance are in axial coincidence, form axial anti-pulling structure, described protuberance overlaps circumferential with described the first protuberance and described the 3rd protuberance respectively, form circumferential anti-pulling structure.
By coordinating of the groove on the outer peripheral face of the protuberance on the inner peripheral surface of insulator and bearing cylindrical portion, can radially improve the duty ratio of coil in miniaturization realizing motor.
On the other hand, the utility model also provides a kind of Air Blast fan, comprises the motor of any one in technique scheme.Because motor improves because having high coil duty ratio performance, so the performance of Air Blast fan also improves.
Accompanying drawing explanation
Those skilled in the art, by the following description of carrying out with reference to the following drawings and to embodiment of the present utility model, can clearly understand above-mentioned and other advantages and feature of the present utility model, in the accompanying drawings:
Fig. 1 (a) and bearing cage and the insulator of the motor of prior art (b) are shown respectively;
Fig. 2 illustrates the cutaway view of the motor of an embodiment of the present utility model;
Fig. 3 illustrates the stereogram of bearing cage of the motor of Fig. 2;
Fig. 4 illustrates the partial front elevation view of the bearing cage of Fig. 3;
Fig. 5 (a) and (b), (c) illustrate other arrangements of the first protuberance, the second protuberance and the 3rd protuberance of bearing cylindrical portion of the motor of Fig. 2;
Fig. 6 illustrates the stereogram of insulator of the motor of Fig. 2;
Fig. 7 illustrates insulator and is assembled in the cross sectional representation in bearing cylindrical portion;
Fig. 8 illustrates insulator and is assembled in the axial schematic diagram in bearing cylindrical portion;
Fig. 9 illustrates the axial schematic diagram of another embodiment of bearing cylindrical portion, and wherein insulator is assembled in bearing cylindrical portion.
Embodiment
Below specifically describe with reference to the accompanying drawings the embodiment of motor of the present utility model.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 scope of the present utility model.Feature in embodiment can combine as required.
In this article, the direction of the central axis OO ' of the axle of term " axially " expression motor, " radially " represent the direction vertical with " axially ", " on " the residing side of expression " axially " upper rotor part retainer, D score represents the residing side of " axially " upper bearing (metal) base plate.
Fig. 2 illustrates the cutaway view of the motor of an embodiment of the present utility model.As shown in Figure 2, motor 1 has stationary part and rotating part.Described stationary part comprises bearing cage 2, be arranged on the stator on the outer peripheral face of bearing cage 2 and be arranged on the bearing 3 on the inner peripheral surface of bearing cage 2.Described stator comprises the stator core 4 being formed by magnet, the insulator 5 that is covered in stator core 4 and the coil 6 that is wound in stator core 4 by means of insulator 5.Although the bearing 3 shown in figure is sliding bearing, can be rolling bearing, for example ball bearing.Insulator 5 can comprise upper insulator and lower insulator, the axial upside of described upper insulator covering stator iron core 4, the axial downside of described lower insulator covering stator iron core 4.Bearing cage 2 has bearing cylindrical portion 7 and bearing base plate 8.Insulator 5 is arranged on the outer peripheral face of bearing cylindrical portion 7, and bearing 3 is arranged on the inner peripheral surface of bearing cylindrical portion 7.Circuit substrate 9 is arranged in the below of stator, and the diameter of the external diameter of circuit substrate 9 and bearing base plate 8 is roughly the same.One end of coil 6 is connected to the electronic unit on circuit substrate 9.The wire 10 that is connected to the bottom of circuit substrate 9 is connected to external power source (not shown).
Described rotating part is supported for and can rotates by bearing 3.Described rotating part comprises by the axle 11 of bearing 3 rotatable supports and the rotor retainer 12 being supported by axle 11.Axle 11 has central axis OO '.On the interior weekly form of rotor retainer 12, be provided with rotor magnet 13.Rotor magnet 13 is positioned at the radial outside of stator core, relative along radial direction with stator core.When providing electric current by wire 10 and circuit substrate 9 to coil 6 by external power source, the magnetic field interaction that the magnetic field that stator core 4 produces and the rotor magnet 13 that obtains multistage magnet by being magnetized form and the moment that rotates on rotor retainer 12, rotor retainer 12 rotates around central axis OO ' together with axle 11 thus.
Fig. 3 illustrates the stereogram of bearing cage of the motor of Fig. 2; Fig. 4 illustrates the partial front elevation view of the bearing cage of Fig. 3.The bearing cylindrical portion 7 of bearing cage 2 is provided with towards radial outside outstanding the first protuberance 16, the second protuberance 17 and the 3rd protuberance 18 on its outer peripheral face.By the first protuberance 16, the second protuberance 17 and the 3rd protuberance 18, surrounded and formed a groove 19, wherein the second protuberance 17 forms the upper axial end wall of groove 19, the relative circumferential side wall of the first protuberance 16 and the 3rd protuberance 18 formation grooves 19.As shown in Figure 3 and Figure 4, the second protuberance 17 can be positioned at axially top of the first protuberance 16, and the second protuberance 17 and the 3rd protuberance 18 are the holistic thickened part 20 continuous with the first protuberance 16.Yet inventor has also expected the mode that other are possible.Fig. 5 (a) and (b), (c) illustrate other arrangements of the first protuberance, the second protuberance and the 3rd protuberance of bearing cylindrical portion of the motor of Fig. 2.For example, the first protuberance, the second protuberance and the 3rd protuberance can be the protuberance of three spaces, as shown in Fig. 5 (a); The second protuberance and the 3rd protuberance can be continuous holistic thickened part, shown in Fig. 5 (b); The first protuberance and the second protuberance can be continuous holistic thickened part, shown in Fig. 5 (c).
Fig. 6 illustrates the stereogram of insulator of the motor of Fig. 2.As shown in the figure, insulator 5(upper insulator or lower insulator or the two) within it side face have towards at least one outstanding protuberance 21 of radially inner side.Fig. 7 illustrates insulator and is assembled in the cross sectional representation in bearing cylindrical portion, and Fig. 8 illustrates insulator and is assembled in the axial schematic diagram in bearing cylindrical portion.In Fig. 7 and Fig. 8, for clarity sake, insulator is illustrated by the broken lines, and bearing cylindrical portion is represented by solid line; In Fig. 8, directions X represents that axially Y-direction represents circumferentially in addition.Complete in the situation of being assembled in, the protuberance 21 of insulator 5 is held by the groove 19 of bearing cylindrical portion 7, thereby protuberance 21 overlaps axial with the second protuberance 17, forms axial anti-pulling structure, protuberance 21 overlaps circumferential with the first protuberance 16 and the 3rd protuberance 18 respectively, forms circumferential anti-pulling structure.As shown in Figure 7, protuberance 21 can circumferentially form inclined plane 22, and in addition, protuberance 51 can be the wave-like shown in Fig. 7 dotted line, like this can be so that the assembling of stator and bearing cage.Although insulator shown in Fig. 75 comprises three protuberances 21, the number of protuberance 21 can be different, for example one, two, four or more than.In addition, the protuberance 51 of insulator shown in Fig. 75 can be in circumferential equivalent arrangements, thereby it is impartial to make to be applied to the stress of insulator 5, prevents that stress from concentrating, and causes insulator to break.Certainly, the protuberance 21 of insulator 5 also can, in layouts such as circumferential asymmetries, prevent from installing dislocation like this.From Fig. 7, it can also be seen that, the groove 19 of bearing cylindrical portion 7 can be identical with the quantity of the protuberance 21 of insulator 5, for example, be three.For groove 19 holds protuberance 21 completely in radial direction, the radial dimension d of protuberance 21 is less than the distance D between the inner peripheral surface of insulator 5 and the outer peripheral face of bearing cylindrical portion 7, be the degree of depth of groove 19, can radially further improve the duty ratio of coil in miniaturization realizing motor like this.
As shown in Figure 8, the axial end portion relative with the 3rd protuberance 18 of protuberance 21 can just have the second inclined plane 23 or flexure plane in the axial direction.The axial length h of the first protuberance 16 can be less than the axial length H of protuberance 21, prevents from like this damaging the first protuberance.The outer peripheral face of bearing cylindrical portion 7 the first protuberance 16 and groove 19 axially below can there is axially open 24(and see Fig. 3), make for the mould of bearing cylindrical portion easily releasely, be convenient to the moulding of bearing cylindrical portion.Bearing cylindrical portion 7 can circumferentially arrange a plurality of thickened part 20, and circumferential being provided with, can be highlighted the peristome 25(that insert, axially open of portion 21 referring to Fig. 3 between adjacent thickened part 20), the circumferential end faces of a part for the restriction peristome 25 of the first protuberance 16 is setovered towards groove 19 with respect to the circumferential end faces of a part for the restriction peristome 25 of the second protuberance 17, can prevent that protuberance 21 from producing obstruction when crossing the first protuberance 16.In assembling process, by in the situation of the axially open of the peristome 25 of the protuberance of insulator 5 21 alignment bearings cylindrical portion 7, along directions X (axially downwards) insert insulator 5(now protuberance 21 be arranged in peristome 25), yet (circumferential along Y-direction again, rotating insulated body 5 as shown in Figure 8 to the right), make protuberance 21 cross the first protuberance 16 and enter groove 19, thereby form axial anti-pulling structure and circumferential anti-pulling structure.
Fig. 9 illustrates the axial schematic diagram of another embodiment of bearing cylindrical portion, and wherein insulator is assembled in bearing cylindrical portion.The bearing cylindrical portion of Fig. 9 and the bearing cylindrical portion of Fig. 8 are similar, its difference is: the circumferential end faces of a part for the restriction peristome 25 ' of the first protuberance 16 ' and the second protuberance 17 ' is the continuous tilt face 26 with respect to axially tilting towards groove 19, thereby can prevent that protuberance 21 from producing and hindering when crossing the first protuberance 16 '.
Motor of the present utility model also has the following advantages:
In a preferred embodiment, the radial dimension of described protuberance is less than the distance between the inner peripheral surface of described insulator and the outer peripheral face of described bearing cylindrical portion.Described like this groove can hold described protuberance completely, thereby radially further improves the duty ratio of coil in miniaturization realizing motor
In a preferred embodiment, on the circumferential formation inclined plane of described protuberance.Be convenient to like this assembling of stator and bearing cage.
In a preferred embodiment, described protuberance is in circumferentially impartial setting.Make to be like this applied to the stress equalization of insulator, prevent that stress is concentrated, and cause insulator to break.
In a preferred embodiment, described protuberance is in settings such as circumferential asymmetries.Can prevent from like this installing dislocation.
In a preferred embodiment, the axial end portion relative with described the 3rd protuberance of described protuberance just has inclined plane or flexure plane in the axial direction.Be convenient to like this assembling of stator and bearing cage.
In a preferred embodiment, described the second protuberance is positioned at described the first axial top of protuberance, and described the second protuberance and described the 3rd protuberance are the holistic thickened part continuous with described the first protuberance.Be convenient to like this moulding the first protuberance, the second protuberance and the 3rd protuberance, and be convenient to the assembling of stator and bearing cage.
In a preferred embodiment, described groove is identical with the quantity of described protuberance.Can form so a plurality of axial and circumferential anti-pulling structures.In a preferred embodiment, described bearing cylindrical portion has a plurality of thickened part at its outer peripheral face; Circumferentially between adjacent thickened part, be provided with can be by described protuberance peristome that insert, axially open; The circumferential end faces of a part for the described peristome of restriction of described the first protuberance and described the second protuberance is the continuous tilt face tilting towards described groove with respect to axially.Can prevent that like this protuberance from producing obstruction when crossing the first protuberance.In another preferred embodiment, described bearing cylindrical portion has a plurality of thickened part at its outer peripheral face; Circumferentially between adjacent thickened part, be provided with can be by described protuberance peristome that insert, axially open; The circumferential end faces of a part for the described peristome of restriction of described the first protuberance is setovered towards described groove with respect to the circumferential end faces of a part for the described peristome of restriction of described the second protuberance.Can prevent that equally protuberance from producing obstruction when crossing the first protuberance.
In a preferred embodiment, the axial length of described the first protuberance is less than the axial length of described protuberance.Can prevent from like this damaging the first protuberance.
In a preferred embodiment, the outer peripheral face of described bearing cylindrical portion described the first protuberance and described groove axially below there is axially open.Make like this for the mould of bearing cylindrical portion easily releasely, be convenient to the moulding of bearing cylindrical portion.
Claims (13)
1. a motor, this motor has stationary part and rotating part;
Described stationary part comprises stator core, insulator, coil, bearing cage and bearing;
Described stator core is formed by magnet;
Described insulator covers described stator core, and described insulator comprises upper insulator and lower insulator, and described upper insulator covers the axial upside of described stator core, and described lower insulator covers the axial downside of described stator core;
Described coil is wound in described stator core by described insulator;
Described bearing cage has bearing cylindrical portion and the bearing base plate that keeps described bearing;
Described rotating part by described bearings for rotating;
It is characterized in that:
At least one party in described upper insulator and described lower insulator within it side face has towards at least one outstanding protuberance of radially inner side;
Described bearing cylindrical portion is provided with towards radial outside outstanding the first protuberance, the second protuberance and the 3rd protuberance on its outer peripheral face,
By described the first protuberance, described the second protuberance and described the 3rd protuberance, surround and be formed with groove,
Described the second protuberance forms the upper axial end wall of described groove, and described the first protuberance and described the 3rd protuberance form respectively the relative circumferential side wall of described groove,
Described groove holds described protuberance,
Described protuberance and described the second protuberance, in axial coincidence, form axial anti-pulling structure,
Described protuberance overlaps circumferential with described the first protuberance and described the 3rd protuberance respectively, forms circumferential anti-pulling structure.
2. motor according to claim 1, is characterized in that, the radial dimension of described protuberance is less than the distance between the inner peripheral surface of described insulator and the outer peripheral face of described bearing cylindrical portion.
3. motor according to claim 1, is characterized in that, on the circumferential formation inclined plane of described protuberance.
4. motor according to claim 1, is characterized in that, described protuberance is in circumferentially impartial setting.
5. motor according to claim 1, is characterized in that, described protuberance is in settings such as circumferential asymmetries.
6. motor according to claim 1, is characterized in that, the axial end portion relative with described the 3rd protuberance of described protuberance just has inclined plane or flexure plane in the axial direction.
7. motor according to claim 1, is characterized in that, described the second protuberance is positioned at described the first axial top of protuberance, and described the second protuberance and described the 3rd protuberance are the holistic thickened part continuous with described the first protuberance.
8. motor according to claim 1, is characterized in that, described groove is identical with the quantity of described protuberance.
9. motor according to claim 1, is characterized in that, the axial length of described the first protuberance is less than the axial length of described protuberance.
10. motor according to claim 1, is characterized in that, the outer peripheral face of described bearing cylindrical portion described the first protuberance and described groove axially below there is axially open.
11. motors according to claim 7, is characterized in that, described bearing cylindrical portion has a plurality of thickened part at its outer peripheral face;
Circumferentially between adjacent thickened part, be provided with can be by described protuberance peristome that insert, axially open;
The circumferential end faces of a part for the described peristome of restriction of described the first protuberance and described the second protuberance is the continuous tilt face tilting towards described groove with respect to axially.
12. motors according to claim 7, is characterized in that, described bearing cylindrical portion has a plurality of thickened part at its outer peripheral face;
Circumferentially between adjacent thickened part, be provided with can be by described protuberance peristome that insert, axially open;
The circumferential end faces of a part for the described peristome of restriction of described the first protuberance is setovered towards described groove with respect to the circumferential end faces of a part for the described peristome of restriction of described the second protuberance.
13. 1 kinds of Air Blast fans, is characterized in that, this Air Blast fan comprises the motor described in any one in the claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663824.8U CN203537083U (en) | 2013-10-25 | 2013-10-25 | Motor and air-supplying fan comprising motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663824.8U CN203537083U (en) | 2013-10-25 | 2013-10-25 | Motor and air-supplying fan comprising motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203537083U true CN203537083U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320663824.8U Expired - Fee Related CN203537083U (en) | 2013-10-25 | 2013-10-25 | Motor and air-supplying fan comprising motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203537083U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578476A (en) * | 2013-10-25 | 2015-04-29 | 日本电产株式会社 | Motor and air supplying fan comprising motor |
| CN110474468A (en) * | 2018-05-11 | 2019-11-19 | 日本电产株式会社 | Motor and motor assemble method |
-
2013
- 2013-10-25 CN CN201320663824.8U patent/CN203537083U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578476A (en) * | 2013-10-25 | 2015-04-29 | 日本电产株式会社 | Motor and air supplying fan comprising motor |
| CN110474468A (en) * | 2018-05-11 | 2019-11-19 | 日本电产株式会社 | Motor and motor assemble method |
| CN110474468B (en) * | 2018-05-11 | 2021-09-17 | 日本电产株式会社 | Motor and motor assembling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140409 |