CN104426287A - Motor - Google Patents
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- Publication number
- CN104426287A CN104426287A CN201310397446.8A CN201310397446A CN104426287A CN 104426287 A CN104426287 A CN 104426287A CN 201310397446 A CN201310397446 A CN 201310397446A CN 104426287 A CN104426287 A CN 104426287A
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- CN
- China
- Prior art keywords
- oil
- lateral wall
- wall portions
- motor
- oily lining
- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
- H02K5/1675—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at only one end of the rotor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention provides a motor, which comprises a rotating part and a static part, wherein the rotating part comprises a rotor and a shaft fixedly arranged on the rotor, the static part comprises a sleeve and a bearing retaining part, the sleeve is made of oil-containing sintering materials, and forms a sliding bearing supporting the shaft to freely rotate, the bearing retaining part is provided with a round tube part accommodating the sleeve, the shaft passes through the sleeve and is projected in a direction below the lower surface of the bearing retaining part, the motor is also provided with an oil stop bushing, and the oil stop bushing is arranged under the sleeve and is fixed to the shaft, wherein the oil stop bushing rotates together with the shaft, the oil stop bushing is provided with a base part and a side wall part extending from the base plate in the vertical direction, and the oil stop bushing is not in contact with the static part. The motor has the advantages that the oil stop bushing is separated from the static part, and oil on the oil stop bushing is prevented from flowing onto the static part, so that the oil leakage is thoroughly prevented.
Description
Technical field
The present invention relates to a kind of motor, more specifically, relating to a kind of motor with stopping oily lining.Background technology
Usually, in the motor using oiliness bearing, when the motor is rotated, the oil in bearing can flow out vertically along with axle rotates.In order to prevent such leakage of oil, usually need to arrange only oily parts in motor.For this reason, prior art has done multiple exploration.
Such as, disclose so a kind of motor in Japanese Unexamined Patent Publication 2003-319603 publication, this motor is fixed with only oily parts on axle.See Fig. 1, motor disclosed in Japanese Unexamined Patent Publication 2003-319603 publication is shown, it comprises: housing 1, has sidewall 13, and the end face of sidewall 13 is 13a; Bearing 2; Shaft bearing plate 3; Axle 10; Only oily parts 11, are fixed on axle 10, have upper surface 11a and groove 14.In this motor, mainly through being fixed on only oily parts 11 on axle 10 to prevent leakage of oil.
But still may Leakage be there is in this motor.See Fig. 1, only oily parts 11 contact with the shaft bearing plate (stationary part of motor) 3 of motor, when this motor High Rotation Speed, due to the effect of centrifugal force, the oil 12 flowed out vertically can splash to radial outside, namely, easily flow on the shaft bearing plate 3 of motor, under gravity, the oil droplet splashed down will to axially below outflow, and the secondary that oil occurs spills.In addition, see Fig. 1, in this motor outstanding under axis, the oily 12a splashed towards radial outside is once splash to the outer surface of only oily parts 11 or housing 1, then under gravity, the oil droplet splashed down will to axially below outflow, and the secondary that oil also can occur spills.If when being installed in such as relevant to food equipment by such motor, such leakage of oil will cause the problem of food security.
Therefore, a kind of novel motor that thoroughly can prevent leakage of oil is needed.
Summary of the invention
The object of this invention is to provide a kind of novel motor, it comprises: rotating part and stationary part,
Described rotating part comprises: rotor and be fixed on epitrochanterian axle,
Described stationary part comprises:
Sleeve, it is made up of oil-impregnated sintered material, forms the sliding bearing supporting described axle and rotate freely;
Bearing cage, it has the cylindrical portion holding described sleeve,
Described axle is through described sleeve outstanding to the direction more lower than the lower surface of described bearing cage;
Wherein:
Described motor also has the only oily lining being arranged at below described sleeve and being fixed to described axle,
Described only oily lining rotates together with described axle,
The sidewall portion that described only oily lining has base portion and extends along the vertical direction from described base portion,
Described only oily lining does not contact with described stationary part.
Motor of the present invention by will stop oily lining and stationary part from, prevent the oil stopped on oily lining to flow in stationary part, thus thoroughly can prevent leakage of oil.
Accompanying drawing explanation
The following description that those of ordinary skill in the art carries out by referring to accompanying drawing more clearly can understand above-mentioned and other advantage of the present invention.Should be understood that the embodiment shown in accompanying drawing is only exemplary, may not be shown to scale, and for the sake of clarity, omit some parts.In the accompanying drawings:
Fig. 1 is the cutaway view of a kind of motor of the prior art;
Fig. 2 is the schematic cross sectional views of the motor according to one embodiment of the invention;
Fig. 3 is the schematic cross sectional views of the motor according to another embodiment of the invention;
Fig. 4 is the schematic cross sectional views of the only oily lining according to motor of the present invention; And
Fig. 5 is the schematic cross sectional views of the only variation of oily lining in Fig. 4.
Reference numeral:
Embodiment
Should be understood that following embodiment is only illustrative, is not restrictive to the present invention.Protection scope of the present invention is defined by the claims.Should also be understood that in the practice of the invention, need not comprise all technical characteristics in following all embodiments, these technical characteristics can have multiple combination.
In this article, term " on ", D score, " interior ", " outward " all for reference to accompanying drawing be convenient to describe and use.In addition, with reference to Fig. 2, the direction of centrally axes O O ' is defined as axis, the direction, footpath centered by central axis OO ' is defined as radial direction, the circumferencial direction centered by central axis OO ' is defined as circumference.
Fig. 2 is the schematic cross sectional views of the motor according to one embodiment of the invention.With reference to Fig. 2, in the axial direction, the top of Fig. 2 is defined as " on ", the below of Fig. 2 is defined as D score; Diametrically, the direction near central axis OO ' is defined as " interior ", the direction away from central axis OO ' is defined as " outward ".
Fig. 2 illustrates the motor 100 according to one embodiment of the invention, and motor 100 comprises rotating part and stationary part; Described rotating part comprises rotor and is fixed on epitrochanterian axle 101; Described stationary part comprises: sleeve 102, and it is made up of oil-impregnated sintered material, forms the sliding bearing that back shaft 101 rotates freely; Bearing cage 103, it has the cylindrical portion 1031 holding described sleeve, and axle 101 is outstanding to the direction more lower than the lower surface of bearing cage 103 through sleeve 102; Wherein, motor 100 also has the only oily lining 104 being arranged at below sleeve 102 and being fixed to axle 101, only oily lining 104 rotates together with axle 101, only oily lining 104 has base portion 1041 and from the sidewall portion 1042,1044 that base portion 1041 extends along the vertical direction, stops oily lining 104 and do not contact with described stationary part.
Motor of the present invention by will stop oily lining and stationary part from, prevent the oil stopped on oily lining to flow in stationary part, thus thoroughly can prevent leakage of oil; Further, by the setting in sidewall portion, the splashing to radial outside of oil is prevented.
See Fig. 4, the schematic cross sectional views of only oily lining 104 is shown, its sidewall portion stopping oily lining 104 comprises the first upper lateral wall portions 1042 extended upward from the radial outside of base portion 1041, and has the oil storage groove 1043 caved in downwards between the first upper lateral wall portions 1042 and described axle (not shown in Fig. 4); Can stop being stored in from sleeve oil spill in oily lining by arranging oil storage groove 1043, thus prevent spilling of oil.Only the sidewall portion of oily lining 104 also comprises the second upper lateral wall portions 1044 being positioned at and more leaning on axially below than the first upper lateral wall portions 1042; Can collect from the first upper lateral wall portions 1042 oil spill by arranging the second upper lateral wall portions 1044, prevent flowing out to axial below of oil, the second upper lateral wall portions portion also can prevent from again splashing to radial outside from sidewall oil spill above first simultaneously.Thus the object better preventing leakage of oil can be reached.
Refer again to Fig. 2, bearing cage 103 have to extend downwards from cylindrical portion 1031 and the radial outer side be positioned at below extension 1032, second upper lateral wall portions 1044 of radial outside and the first upper lateral wall portions 1042 diametrically contraposition than below extension 1032 more by radial outside.By the second upper lateral wall portions being arranged on the radial outside of below extension, the oil droplet splashed on the extension of below can be collected by the second upper lateral wall portions again, prevents oil droplet from spilling below axially.In addition, as shown in Figure 2, radial outside is leaned on than the radially inner side face of the cylindrical portion 1031 of bearing cage 103 in the radially inner side face of the first upper lateral wall portions 1042.Leaning on radial outside by being arranged on by the medial surface of the first upper lateral wall portions than the radially inner side face of cylindrical portion, the oil droplet be splashed on the radially inner side face of cylindrical portion can be made to fall back to the radially inner side of the first upper lateral wall portions, prevent oil to spill to radial outside.
See Fig. 3, motor 100 ' according to another embodiment of the invention is shown, motor 100 ' is similar to the motor 100 shown in Fig. 2, and difference is, in motor 100 ', the inclined plane had along with tilting laterally towards axial below to radial direction of below extension 1032 '.By arranging this inclined plane, making to form capillary structure between the medial surface of the lateral surface of sidewall above first and below extension, oil droplet can be prevented further to axial flowing underneath, thus realize the object of oil-leakage-prevention.
In motor of the present invention, it can also have and is positioned at oil sealing parts below only oily lining 104 (for clarity sake, not shown in Fig. 2-3), described oil sealing parts are that centre has the discoideus of centre bore, and axle 101 extends downwards through the centre bore of described oil sealing parts.The object of oil-leakage-prevention better can be realized by arranging oil sealing parts.
See Fig. 4 or Fig. 5, only oily lining 104 has the lower lateral wall portions 1045 extended from base portion 1041 downwards on bottom surface, lower lateral wall portions 1045 is positioned at than the position of the first upper lateral wall portions 1042 by radially inner side, and and shown in axle 101(Fig. 2-3) interval one distance.By arranging lower lateral wall portions, oil can be cut off at the circulation path only between oily sleeve outer surface and axle, can prevent the oil escaping to only oily sleeve outer surface from flowing back on axle like this, thus prevent the secondary of oily below vertically to spill.
About the distance between lower lateral wall portions 1045 and axle 101, represent with S, the lower surface of itself and lower lateral wall portions 1045 and above-mentioned oil sealing parts are (for clarity sake, not shown in Fig. 2-3) upper surface between difference in height h between there is such relation: S > h × tg θ, wherein θ is the angle between motor and horizontal plane; Such as, when motor of the present invention is used in the pot cover of electric rice cooker, θ is the folding angle between pot cover and horizontal plane, and this folding angle is generally in the scope such as between 0 ° to 90 °.
In motor of the present invention, in oil storage groove 1043, be configured with oil suction parts (for clarity sake, not shown in Fig. 2-5).Preferably, described oil suction parts are felts.By arranging oil suction parts, by the oil constraint in oil storage groove, can prevent it from again flowing out, thus achieve the object of oil-leakage-prevention.
See Fig. 5, the second upper lateral wall portions 1044 has inclined plane 1046, and inclined plane 1046 up tilts towards radial outside.By arranging inclined plane, oil droplet can be made to collect to radially inner side, prevent it from flowing out to radial outside, thus realizing the object of oil-leakage-prevention.
See Fig. 2 and Fig. 3, only oily lining 104 is configured in the below of the gravity direction of sleeve 102, and only oily lining 104 is by resin forming, and axle 101 is fixed in press-in.More easily can manufacturing only oily lining by resin forming, by being pressed into fixing mode, being convenient to the installation of only oily lining, thus with reaching low-cost high-efficiency production object.
In motor of the present invention, only oily lining 104 is coated with the contact-making surface of axle 101 and pulls out finish.The drying condition pulling out finish preferably places more than 30 seconds.Can prevent oil from flowing out along axle and the gap only between oily lining by pulling out finish in contact-making surface coating, thus realize the object of oil-leakage-prevention.
The present invention also tool has the following advantages:
In a preferred embodiment, the sidewall portion of described only oily lining comprises the first upper lateral wall portions extended upward from the radial outside of described base portion, has the oil storage groove caved between described first upper lateral wall portions and described axle downwards.By sidewall, portion extends upward, prevents oil towards the splashing of radial outside, and by arranging oil storage groove, can prevent spilling of oil further.
In a preferred embodiment, the sidewall portion of described only oily lining also comprises the second upper lateral wall portions being positioned at and more leaning on axially below than described first upper lateral wall portions.By arranging the second upper lateral wall portions, the splashing of oil can be prevented further.
In a preferred embodiment, described bearing cage has and to extend downwards and at the below extension of radial outside and described first upper lateral wall portions diametrically contraposition from described cylindrical portion, and described second upper lateral wall portions is positioned at radial outer side than described below extension more by radial outside.The splashing of oil can be prevented so further.
In a preferred embodiment, radial outside is leaned on than the radially inner side face of the cylindrical portion of described bearing cage in the radially inner side face of described first upper lateral wall portions.The oil being splashed to bearing cage flow back in oil storage groove due to the effect of gravity, thus prevents spilling of oil better.
In a preferred embodiment, described below extension has the inclined plane along with tilting laterally towards axial below to radial direction.Capillaries fabricated can be formed between the outer surface of only oily lining and bearing cage like this, prevent oil droplet to axial flowing underneath.
In a preferred embodiment, described motor also has the oil sealing parts be positioned at below described only oily lining, and described oil sealing parts are that centre has the discoideus of centre bore, and described axle extends downwards through the centre bore of described oil sealing parts.By arranging oil sealing parts, spilling of oil can be prevented further.
In a preferred embodiment, described only oily lining has the lower lateral wall portions extended from described base portion downwards on bottom surface.By arranging lower lateral wall portions, cutting off the path of oil below outflow vertically, thus preventing spilling of oil further.
In a preferred embodiment, described lower lateral wall portions is positioned at than the position of described first upper lateral wall portions by radially inner side, and with described between centers every a distance.By arranging lower lateral wall portions, cutting off the path of oil below outflow vertically, thus preventing spilling of oil further, and preventing oil from flowing back on axle.
In a preferred embodiment, oil suction parts are configured with in described oil storage groove.The oil in oil storage groove can be absorbed like this, and then prevent it from flowing out.
In a preferred embodiment, described oil suction parts are felts.The oil in oil storage groove can be absorbed like this, and then prevent it from flowing out.
In a preferred embodiment, described second upper lateral wall portions has inclined plane, and described inclined plane up tilts towards radial outside.Oil can be strapped in radially inner side like this, prevent oil from splashing to radial outside.
In a preferred embodiment, described only oily lining is configured in the below of the gravity direction of described sleeve.Can prevent like this because gravity causes spilling of oil.
In a preferred embodiment, described only oily lining is by resin forming, and described axle is fixed in press-in.Like this, only oily lining is easily shaping and be convenient to assembling.
In a preferred embodiment, be coated with at the contact-making surface of described only oily lining and described axle and pull out finish.Oil can be prevented like this along axle and only flow out between oily lining.
Claims (15)
1. a motor, comprising: rotating part and stationary part,
Described rotating part comprises: rotor and be fixed on epitrochanterian axle,
Described stationary part comprises:
Sleeve, it is made up of oil-impregnated sintered material, forms the sliding bearing supporting described axle and rotate freely;
Bearing cage, it has the cylindrical portion holding described sleeve,
Described axle is through described sleeve outstanding to the direction more lower than the lower surface of described bearing cage;
It is characterized in that:
Described motor also has the only oily lining being arranged at below described sleeve and being fixed to described axle,
Described only oily lining rotates together with described axle,
The sidewall portion that described only oily lining has base portion and extends along the vertical direction from described base portion,
Described only oily lining does not contact with described stationary part.
2. motor according to claim 1, is characterized in that, the sidewall portion of described only oily lining comprises the first upper lateral wall portions extended upward from the radial outside of described base portion,
There is the oil storage groove caved in downwards between described first upper lateral wall portions and described axle.
3. motor according to claim 2, is characterized in that, the sidewall portion of described only oily lining also comprises the second upper lateral wall portions being positioned at and more leaning on axially below than described first upper lateral wall portions.
4. motor according to claim 3, is characterized in that, described bearing cage has and to extend downwards and at the below extension of radial outside and described first upper lateral wall portions diametrically contraposition from described cylindrical portion,
Described second upper lateral wall portions is positioned at and more leans on radial outside than the radial outer side of described below extension.
5. motor according to claim 2, is characterized in that, radial outside is leaned on than the radially inner side face of the cylindrical portion of described bearing cage in the radially inner side face of described first upper lateral wall portions.
6. motor according to claim 4, is characterized in that, the medial surface of described below extension has the inclined plane along with tilting laterally towards axial below to radial direction.
7. motor according to claim 1, is characterized in that, described motor also has the oil sealing parts be positioned at below described only oily lining,
Described oil sealing parts are that centre has the discoideus of centre bore,
Described axle extends downwards through the centre bore of described oil sealing parts.
8. motor according to claim 1, is characterized in that, described only oily lining has the lower lateral wall portions extended from described base portion downwards on bottom surface.
9. motor according to claim 8, is characterized in that, described lower lateral wall portions is positioned at than the position of described first upper lateral wall portions by radially inner side, and with described between centers every a distance.
10. motor according to claim 2, is characterized in that, is configured with oil suction parts in described oil storage groove.
11. motors according to claim 10, is characterized in that, described oil suction parts are felts.
12. motors according to claim 3, is characterized in that, described second upper lateral wall portions has inclined plane, and described inclined plane up tilts towards radial outside.
13. motors according to claim 1, is characterized in that, described only oily lining is configured in the below of the gravity direction of described sleeve.
14. motors according to claim 1, is characterized in that, described only oily lining is by resin forming, and described axle is fixed in press-in.
15. motors according to claim 1, is characterized in that, be coated with pull out finish at the described only contact-making surface of oily lining and described axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310397446.8A CN104426287A (en) | 2013-09-04 | 2013-09-04 | Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310397446.8A CN104426287A (en) | 2013-09-04 | 2013-09-04 | Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104426287A true CN104426287A (en) | 2015-03-18 |
Family
ID=52974508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310397446.8A Pending CN104426287A (en) | 2013-09-04 | 2013-09-04 | Motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104426287A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578432A (en) * | 2017-09-28 | 2019-04-05 | 日本电产株式会社 | Bearing arrangement, motor and fan motor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6335148A (en) * | 1986-07-30 | 1988-02-15 | Toshiba Corp | Bearing apparatus of rotary electric machine for rolling stock |
| CN201022161Y (en) * | 2006-02-14 | 2008-02-13 | 晓成电机株式会社 | Oil leakage preventive device for wind electromotor |
| CN201113624Y (en) * | 2007-08-24 | 2008-09-10 | 台达电子工业股份有限公司 | Fan and its motor |
| CN201466852U (en) * | 2009-07-31 | 2010-05-12 | 上海卡固电气设备有限公司 | Bearing for preventing oil leakage |
| CN102340203A (en) * | 2010-07-20 | 2012-02-01 | 日本电产株式会社 | Motor and motor mechanism |
| CN202405914U (en) * | 2011-12-08 | 2012-08-29 | 上海邦浦实业集团有限公司 | Novel submersible motor with labyrinth seal cover |
| CN203445736U (en) * | 2013-09-04 | 2014-02-19 | 日本电产株式会社 | Motor |
-
2013
- 2013-09-04 CN CN201310397446.8A patent/CN104426287A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6335148A (en) * | 1986-07-30 | 1988-02-15 | Toshiba Corp | Bearing apparatus of rotary electric machine for rolling stock |
| CN201022161Y (en) * | 2006-02-14 | 2008-02-13 | 晓成电机株式会社 | Oil leakage preventive device for wind electromotor |
| CN201113624Y (en) * | 2007-08-24 | 2008-09-10 | 台达电子工业股份有限公司 | Fan and its motor |
| CN201466852U (en) * | 2009-07-31 | 2010-05-12 | 上海卡固电气设备有限公司 | Bearing for preventing oil leakage |
| CN102340203A (en) * | 2010-07-20 | 2012-02-01 | 日本电产株式会社 | Motor and motor mechanism |
| CN202405914U (en) * | 2011-12-08 | 2012-08-29 | 上海邦浦实业集团有限公司 | Novel submersible motor with labyrinth seal cover |
| CN203445736U (en) * | 2013-09-04 | 2014-02-19 | 日本电产株式会社 | Motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578432A (en) * | 2017-09-28 | 2019-04-05 | 日本电产株式会社 | Bearing arrangement, motor and fan motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150318 |
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| RJ01 | Rejection of invention patent application after publication |